The girls of 622 Harbor View begin their summer by working to clean and restore their bus to use as a clubhouse in the second volume in this series. As they work on the bus, they discover clues that suggest someone who lived in the bus in the late 1970s had a mysterious past, and is somehow connected with grumpy Mr. Greeley.

Project: Mystery Bus 2007, Zonderkidz, Grand Rapids

ISBN-13: 9780310711872

Supersaver edition

Trade paperback